Modeling the magnetization dynamics for large ensembles of immobilized magnetic nanoparticles in multi-dimensional magnetic particle imaging
Hannes Albers,Tobias Knopp,Tobias Knopp,Martin Möddel,Martin Möddel,Marija Boberg,Marija Boberg,Tobias Kluth,Tobias Kluth +8 more
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TLDR
In this paper, a model-based approach where the magnetization response is simulated by a Neel rotation model for the particle's magnetic moments and the ensemble magnetization is obtained by solving a Fokker-Planck equation approach is presented.About:
This article is published in Journal of Magnetism and Magnetic Materials.The article was published on 2022-02-01 and is currently open access. It has received 1 citations till now. The article focuses on the topics: Magnetization & Magnetic particle imaging.read more
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On the Receive Path Calibration of Magnetic Particle Imaging Systems
TL;DR: In this article , a general multi-channel calibration procedure for inductive receive paths in magnetic particle imaging (MPI) and a blueprint to investigate model and method uncertainties is provided. And the calibration procedure is generalized to also cover nonorthogonal and nonhomogeneous receive coils.
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TL;DR: The circumstances surrounding the realisation that NMR signal reception could be quantified in a simple fundamental manner using Lorentz's Principle of Reciprocity are described and the very simple pseudo-static formula that has been the basis of signal-to-noise calculations for over a generation is described.
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Dependence of Brownian and Néel relaxation times on magnetic field strength.
TL;DR: The authors found that there can be a strong magnetization response to a sinusoidal driving field, even if the period is much less than the zero-field relaxation time, relevant for MPI and MPS.
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2D model-based reconstruction for magnetic particle imaging.
Tobias Knopp,Sven Biederer,Timo F. Sattel,Jürgen Rahmer,Jürgen Weizenecker,Bernhard Gleich,Jörn Borgert,Thorsten M. Buzug +7 more
TL;DR: It is found that the model-based system function is sufficiently accurate to allow for reconstructing experimental data, and the resulting image quality is close to that obtained with a measurement-based reconstruction.
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Magnetic Particle / Magnetic Resonance Imaging: In-Vitro MPI-Guided Real Time Catheter Tracking and 4D Angioplasty Using a Road Map and Blood Pool Tracer Approach.
Johannes Salamon,M Hofmann,M Hofmann,Caroline Jung,Michael G. Kaul,Franziska Werner,Franziska Werner,Kolja Them,Kolja Them,Rudolph Reimer,Peter Nielsen,Annika vom Scheidt,Gerhard Adam,Tobias Knopp,Tobias Knopp,Harald Ittrich +15 more
TL;DR: 4D real time MP imaging, tracking and guiding of endovascular instruments and in-vitro angioplasty is feasible and MRI based roadmapping might emerge as a promising tool for radiation free 4D MPI-guided interventions.
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Quantitative Drug Release Monitoring in Tumors of Living Subjects by Magnetic Particle Imaging Nanocomposite.
Xingjun Zhu,Jianfeng Li,Peng Peng,Niloufar Hosseini Nassab,Bryan Ronain Smith,Bryan Ronain Smith +5 more
TL;DR: A superparamagnetic Fe3O4 nanocluster@poly(lactide-co-glycolide acid) core-shell nanocomposite loaded with a chemotherapy drug (Doxorubicin) which serves as a dual drug delivery system and MPI quantification tracer is designed which provides an improved solution for in vivo drug release monitoring compared to other available monitoring strategies.